To provide a shift range changeover device which is effective for suppressing a transition to a drive prohibition mode at which the drive of a motor is prohibited while suppressing the heat generation of the motor and a drive part.SOLUTION: In the case that a prescribed temperature suppression condition is established when a temperature estimation value MTP of a motor is not larger than an overheat determination value at which a motor reaches a drive prohibition mode, a control part for switching a shift range of a transmission by controlling the drive of the motor of an actuator changes a first mode at which drive power to the motor is not suppressed to a second mode at which the drive power is suppressed. An estimation part for calculating a temperature estimation value MTP increases the temperature estimation value MTP by increase values α1, α2 everytime changeover between a P-range and a non-P range is executed (S110 to S140), and changes the increase value α2 in the second mode to a value smaller than the increase value α1 in the first mode (S140).SELECTED DRAWING: Figure 4

    【課題】モータ及び駆動部の発熱を抑制しつつ、モータの駆動が禁止される駆動禁止モードへの移行も抑制するのに有効な、シフトレンジ切替装置を提供する。【解決手段】アクチュエータのモータの駆動を制御して、変速機のシフトレンジの切り替えを実施する制御部は、モータの温度推定値MTPが、モータの駆動禁止モードに至る過熱判定値よりも大きくない場合に、所定の温度抑制条件が成立すると、モータへの駆動電力を抑制しない第1モードから駆動電力を抑制する第2モードになる。温度推定値MTPを算出する推定部は、Pレンジと非Pレンジとの間の切り替えが実施される毎に温度推定値MTPを増加値α1,α2だけ増加させる(S110~S140)と共に、第2モードの場合の増加値α2を、第1モードの場合の増加値α1よりも小さい値に変更する(S140)。【選択図】図4


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    Title :

    SHIFT RANGE CHANGEOVER DEVICE


    Additional title:

    シフトレンジ切替装置


    Contributors:
    TORII KOTA (author) / KOJIMA RYO (author)

    Publication date :

    2022-05-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16H Getriebe , GEARING / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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